{"id":"CVE-2026-111627","kind":"vulnerability","aliases":["CVE-2026-111627"],"related":[],"title":"HestiaCP: non-root admins can run cron jobs as the root user","description":"HestiaCP before 1.10.5 contains an authorization bypass vulnerability that allows non-ROOT_USER administrators to perform write actions while impersonating the protected ROOT_USER account. Attackers can log in via the loginas parameter and POST to /add/cron/, because the read-only flag is never checked, causing crond to run their commands as the protected administrator's system account.","summary":"HestiaCP before 1.10.5 lets a non-ROOT_USER administrator impersonate the protected ROOT_USER account through the loginas parameter and still perform write actions. By posting to /add/cron/, the attacker gets crond to run commands as that protected administrator's system account.","severity":"high","cvss":8.6,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["hestiacp","runtime","self-hosted","shared-hosting"],"not_affected_if":["hestiacp-1.10.5-or-later","single-admin"],"how_to_check":"- Check the installed HestiaCP version and confirm whether it is below `1.10.5`.\n- Review admin accounts and their roles in the HestiaCP panel to see which non-root administrators exist.","fix":"- Upgrade HestiaCP to `1.10.5` or later.","status":"open","published_at":"2026-10-16T18:17:42+00:00","first_seen_at":"2026-10-23T21:57:13+00:00","triaged_at":"2026-10-25T03:00:07+00:00","updated_at":"2026-10-25T03:00:07+00:00","category":"runtime","confidence":0.6,"triage":{"at":"2026-10-25T03:00:07Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade HestiaCP to `1.10.5` or later.","reach":"internet","title":"HestiaCP: non-root admins can run cron jobs as the root user","impact":"high","summary":"HestiaCP before 1.10.5 lets a non-ROOT_USER administrator impersonate the protected ROOT_USER account through the loginas parameter and still perform write actions. By posting to /add/cron/, the attacker gets crond to run commands as that protected administrator's system account.","category":"runtime","nicknames":[],"who_cares":["hestiacp","self-hosted","shared-hosting"],"confidence":0.6,"needs_auth":"yes","worst_case":"Attacker runs commands as the protected root-level system account","analyst_note":"Confirm the loginas and /add/cron/ exploit path and whether single-admin installs are affected, using the NVD entry and the HestiaCP 1.10.5 release notes.","how_to_check":"- Check the installed HestiaCP version and confirm whether it is below `1.10.5`.\n- Review admin accounts and their roles in the HestiaCP panel to see which non-root administrators exist.","needs_analyst":true,"not_affected_if":["hestiacp-1.10.5-or-later","single-admin"],"who_is_affected":"Servers running HestiaCP before 1.10.5 that have more than one administrator account are exposed. Single-admin installs where only the ROOT_USER account exists are unlikely to be affected, since the risk is a non-root admin reaching the protected account. unknown whether managed hosting variants are affected.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000624,"input_tokens":3348,"output_tokens":578,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-111627':16A,19A '-2026':15A,18A '/add/cron':56B,108C '1.10.5':30B,73C 'account':43B,70B,96C,130C 'action':52B,89C 'admin':5A 'administr':37B,67B,85C,127C 'allow':80C 'attack':58B,97C 'author':76C 'bypass':77C 'caus':118C 'check':117C 'command':63B,123C 'contain':74C 'cron':8A 'crond':60B,119C 'cve':14A,17A 'flag':114C 'get':59B 'hestiacp':1A,20B,28B,71C 'host':24B,27B 'imperson':38B,91C 'job':9A 'let':31B 'log':99C 'logina':46B,103C 'never':116C 'non':3A,34B,82C 'non-root':2A,33B,81C 'paramet':47B,104C 'perform':50B,87C 'post':54B,106C 'protect':40B,66B,93C,126C 'read':112C 'read-on':111C 'root':4A,12A,35B,41B,83C,94C 'run':7A,62B,121C 'runtim':21B 'self':23B 'self-host':22B 'share':26B 'shared-host':25B 'still':49B 'system':69B,129C 'user':13A,36B,42B,84C,95C 'via':101C 'vulner':78C 'write':51B,88C","nicknames":[],"mitigations":[],"who_affected":"Servers running HestiaCP before 1.10.5 that have more than one administrator account are exposed. Single-admin installs where only the ROOT_USER account exists are unlikely to be affected, since the risk is a non-root admin reaching the protected account. unknown whether managed hosting variants are affected.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-16T18:17:42+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-111627","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111627","severity":null,"published_at":"2026-10-16T18:17:42+00:00","modified_at":"2026-10-16T20:17:20+00:00","first_seen_at":"2026-10-23T21:57:13+00:00","fetched_at":"2026-10-23T22:28:55+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}